ARM: dts: OMAP5: add voltage controller nodes

OMAP5430/5432 SoC use same offsets for voltage controller,
however their voltage characteristics differ a little.

NOTE: DRA7 variants of OMAP5 do not contain Voltage Controller

Introduce the voltage controller nodes for the same.

Signed-off-by: Nishanth Menon <nm@ti.com>
ARM: dts: OMAP5: add voltage processor nodes

OMAP5430/5432 SoC use same offsets for voltage processor,
however their voltage characteristics differ a little.

NOTE: DRA7 variants of OMAP5 do not contain Voltage
Processor

Introduce the voltage Processor nodes for the same.

Signed-off-by: Nishanth Menon <nm@ti.com>